What is a Mother Board?

It is the main circuit board inside your computer.
They come in all shapes and sizes as shown above. The Motherboard holds many of
the crucial components of the system, such as the processor and memory, while
providing connectors for other peripherals. The motherboard is sometimes
alternatively known as the Main Board, System Board or on Apple Computers the
Logic Board. It is also sometimes casually shortened to "mobo".

A typical desktop computer has its Microprocessor,
Main Memory (RAM), and other essential components connected to the motherboard.
Other components such as external storage, controllers for video display and
sound and other peripheral devices may be attached to the motherboard as plug-in
cars or via cables. In some cases, such as with video, it is common to
integrate these circuits into the motherboard itself.

An important component of a motherboard is the microprocessor and supporting Chipset, which provides the supporting interfaces
between the CPU and the various buses and external components. The Chipset
determines the features and capabilities of the motherboard.